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BACKPORT: FROMGIT: Binder: Add timestamp to transaction record

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This patch adds a timestamp field to the binder_transaction
structure to track the time consumed during transmission
when reading binder_transaction records.

Signed-off-by: Chuang Zhang <zhangchuang3@xiaomi.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/5ac8c0d09392290be789423f0dd78a520b830fab.1682333709.git.zhangchuang3@xiaomi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 235773151
(cherry picked from commit 800936191a
 git: //git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
 char-misc-next)
[cmllamas: resolved minor conflicts with local patches]
Change-Id: If6dab2e9b80c71f9ac3084dc8cf0e519976f55d8
Signed-off-by: Carlos Llamas <cmllamas@google.com>
This commit is contained in:
Chuang Zhang
2023-04-24 19:05:14 +08:00
committed by Carlos Llamas
parent d7b3d8d1e5
commit f00a145958
2 changed files with 8 additions and 2 deletions
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9
drivers/android/binder.c
View File

@@ -66,6 +66,7 @@
#include <linux/syscalls.h> #include <linux/syscalls.h>
#include <linux/task_work.h> #include <linux/task_work.h>
#include <linux/sizes.h> #include <linux/sizes.h>
#include <linux/ktime.h>
#include <linux/android_vendor.h> #include <linux/android_vendor.h>
#include <uapi/linux/sched/types.h> #include <uapi/linux/sched/types.h>
@@ -3113,6 +3114,7 @@ static void binder_transaction(struct binder_proc *proc,
binder_size_t last_fixup_min_off = 0; binder_size_t last_fixup_min_off = 0;
struct binder_context *context = proc->context; struct binder_context *context = proc->context;
int t_debug_id = atomic_inc_return(&binder_last_id); int t_debug_id = atomic_inc_return(&binder_last_id);
ktime_t t_start_time = ktime_get();
char *secctx = NULL; char *secctx = NULL;
u32 secctx_sz = 0; u32 secctx_sz = 0;
struct list_head sgc_head; struct list_head sgc_head;
@@ -3358,6 +3360,7 @@ static void binder_transaction(struct binder_proc *proc,
binder_stats_created(BINDER_STAT_TRANSACTION_COMPLETE); binder_stats_created(BINDER_STAT_TRANSACTION_COMPLETE);
t->debug_id = t_debug_id; t->debug_id = t_debug_id;
t->start_time = t_start_time;
if (reply) if (reply)
binder_debug(BINDER_DEBUG_TRANSACTION, binder_debug(BINDER_DEBUG_TRANSACTION,
@@ -6180,18 +6183,20 @@ static void print_binder_transaction_ilocked(struct seq_file *m,
{ {
struct binder_proc *to_proc; struct binder_proc *to_proc;
struct binder_buffer *buffer = t->buffer; struct binder_buffer *buffer = t->buffer;
ktime_t current_time = ktime_get();
spin_lock(&t->lock); spin_lock(&t->lock);
to_proc = t->to_proc; to_proc = t->to_proc;
seq_printf(m, seq_printf(m,
"%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %d:%d r%d", "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %d:%d r%d elapsed %lldms",
prefix, t->debug_id, t, prefix, t->debug_id, t,
t->from ? t->from->proc->pid : 0, t->from ? t->from->proc->pid : 0,
t->from ? t->from->pid : 0, t->from ? t->from->pid : 0,
to_proc ? to_proc->pid : 0, to_proc ? to_proc->pid : 0,
t->to_thread ? t->to_thread->pid : 0, t->to_thread ? t->to_thread->pid : 0,
t->code, t->flags, t->priority.sched_policy, t->code, t->flags, t->priority.sched_policy,
t->priority.prio, t->need_reply); t->priority.prio, t->need_reply,
ktime_ms_delta(current_time, t->start_time));
spin_unlock(&t->lock); spin_unlock(&t->lock);
if (proc != to_proc) { if (proc != to_proc) {

1
drivers/android/binder_internal.h
View File

@@ -567,6 +567,7 @@ struct binder_transaction {
bool set_priority_called; bool set_priority_called;
bool is_nested; bool is_nested;
kuid_t sender_euid; kuid_t sender_euid;
ktime_t start_time;
struct list_head fd_fixups; struct list_head fd_fixups;
binder_uintptr_t security_ctx; binder_uintptr_t security_ctx;
/** /**